Châlons Cathedral (French: Cathédrale Saint-Étienne de Châlons) is a Roman Catholic church in Châlons-en-Champagne, France, formerly known as Châlons-sur-Marne.

The cathedral is the seat of the Bishop of Châlons and was consecrated in 1147 October 26, by Pope Eugene III.

Jean-Jacques Arveuf-Fransquin designed the neo-Flamboyant west end organ case of Châlons Cathedral.

After work by Max and André Roethinger in 1957, the organs were restored between 2000 and 2006 in the spirit (composition and harmonization) of 1898 by the Renault-Menoret company, then by Olivier Robert and Denis Lacorre.

This article on a Roman Catholic cathedral in France is a stub.